9-12, (01245689A): Enneatonic
   
Interval-content vector <666963>
Distance (6/9)*

the minimum Euclidean distance from this set to any transposition of the perfectly even 9 note chord, in semitones

Cohemitonic chromatic-cluster-containing
Hemitonic set contains one or more semitones
Maximally Even divides the octave maximally evenly (for cardinality of 5, 7, 8 or 9, no set can be perfectly even)
Mode of Limited Transposition this set has fewer than 12 unique transpositions
Self-M-Related the M-relation (replace semitone intervals with perfect fourths) maps this set to itself
Symmetric the inverse of this set is the same set
Tritonic set contains one or more tritones